{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "Parturients with normal volume status , heart valves and pulmonary vasculature most often respond to this hypotension with a compensatory increase in heart rate and stroke volume ."}
{"Chemical": [], "Disease": ["hypotension", "stroke"]}